Re: [PATCH 1/9] refs: Introduce pseudoref and per-worktree ref concepts

David Turner [off-list ref] writes:

I meant "and that contain a line consisting of a SHA" to exclude HEAD,
but I need to add a "always" in there, since detached HEAD would
otherwise apply.

I do not think "always" is as a good escape hatch as an explicit
exclusion of "HEAD".  The latter is more direct and to the point.